Fundamental Object-Oriented Concepts

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Earning a Microsoft certification acknowledges your expertise in working with Microsoft products and technologies and sets you apart from the crowd as a development professional. Microsoft certification demonstrates that you have the ability to successfully implement Microsoft business solutions for your organization or client.

This article will provide a basic understanding of the scope of the certification and will also give details about the certification along with the useful resources to get started.

Introduction

With .NET, Microsoft is also espousing a vision, this time about how the Internet can make businesses more efficient and deliver services to consumers. The present enterprise setup’s need to have n-tier architecture with diverse platforms and object models communicating with each other. The present applications are to be created such that those applications have to run in any platform (like Windows, Linux, Mac, Unix etc.) and which consist of components written in many programming languages and object models.

The framework’s Base Class Library provides a large range of features including user interface, data and data access, database connectivity, cryptography, web application development, numeric algorithms, and network communications. The class library is used by programmers, who combine it with their own code to produce applications. Many language vendors have tried to upgrade their languages, but there is a frontier to which they have been victorious since they have to maintain backward competence and face many additional problems too. To resolve the problem of the existing programmers Microsoft has come with a very promising solution “The .NET Platform”.

.NET provides a number of benefits that will make developers further productive, trim down the number of bugs, alacrity application development, and simplify deployment. IT managers are understandably cautious, since .NET is a new technology that requires a moderately sharp learning curve. For most organizations, however, the benefits will far overshadow the negatives; and with .NET, you’ll see great productivity gains for future development projects.

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Creating a WPF application

• Windows and navigation applications are installed on a desktop computer. These applications can also run under the full trust environment and have full access to the resources of the computer being used.
• A XAML browser application runs in Windows Internet Explorer. It runs under a limited set of permissions allowed by the Internet security zone. It can access isolated storage available in the zone. It cannot use a desktop computer’s resources such as the file system, databases, and the Windows registry.
• A WPF standalone application is installed on a client computer. Hence, it does not require a Web browser. It behaves like a Windows Form application and presents a non-navigational interface to a user. It can also be used by offline users.
• The WPF technology supports three basic types of applications, namely Windows applications, navigation applications, and XAML browser applications.
• A WPF application supports Web-style navigation capabilities using Web pages and hyperlinks.
• The event route for a particular event (for example, the Click event) can travel from the source element, which bubbles upwards through the element tree of its parent element until it reaches the element tree root (can be a page or a window).
• The Click event is raised when the Button control is clicked.
• The private void OnChildElementMouseDown(object sender, MouseButtonEventArgs e) {} code segment in the scenario will simply execute the mouse event and the bubbling or tunneling routing process will continue. If you have written e.Handled = true; inside the code statement, the bubbling or tunneling routing process would have been stopped and has marked the event as handled in the event handler.

Pass MCTS: Microsoft Visual Studio 2008 in a first attempt:

• 70-502-CSHARP, MCTS: C# .NET 3.5 C# Windows Presentation Foundation Application Development
• 70-503-CSHARP, MCTS: C#.NET Framework 3.5 – Windows Communication Foundation Application
• 70-504-CSHARP, MCTS:.NET C# 3.5 – Windows Workflow Foundation Application Development
• 70-536-CSHARP, C# .NET Framework Application Development Foundation
• 70-561-CSHARP, TS: Microsoft .NET Framework 3.5, ADO.NET Application Development

Continue reading “MCTS 70-502-CSHARP Short Notes: Exam Passing Tips” »

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List the capabilities of SQL SELECT statements

• The numeric data type is represented as NUMBER
• The WHERE clause in the SELECT statement does not support a group function.
• Single ampersand (&) and double ampersand (&&) are the types of substitution variables.
• Projection is a capability used to choose the columns that a user wants to retrieve from a table by using a SELECT statement.
• The concatenation operator (||) is used to combine the column values.
• The ALL operator is used in the WHERE clause and it compares a value with any of the values in the list provided.
• The column list can be omitted from the INSERT INTO command, but the values must match the order of the columns as listed in the output from the DESC(RIBE) command.

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Dwaine R. Snow is a Senior DB2 Technical Evangelist at IBM in Philadelphia, PA, USA. He has been working with DB2 on Linux, UNIX, and Windows and its predecessors for his 19+ years at IBM, dating back to when it was still embedded in OS/2. Dwaine is the Author of several book on DB2, including the DB2 9 for Linux, UNIX, and Windows Advanced Database Administration Study Guide. Dwaine also presents at DB2 conferences and user groups around the world, and when not working can be found fishing or trying to play golf.

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